Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 193)

Calibration Procedures Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 173
5.3. MANUAL CALIBRATION
The following section describes the basic method for manually calibrating the Model
9110TH/M NO
X
analyzer.
If both available DAS parameters for a specific gas type are being reported via the
instruments analog outputs e.g. NXCNC1 and NXCNC2, separate calibrations should
be carried out for each parameter.
 Use the LOW button when calibrating for NXCNC1
 Use the HIGH button when calibrating for NXCNC2.
See Section 4.13.4 for more information on analog output reporting ranges
STEP ONE:
Connect the sources of zero air and span gas as shown below.
VENT here if input
is pressurized Source of
SAMPLE Gas
PUMP
Instrument
Chassis
Sample
Exhaust
Span Point
Zero Air
Calibr
ated
NO
at
HIG
H
Span
Co
nc
e
nt
rat
ion
Filter
External Zero
Air Scrubbe r
VENT if not
vented at
calibrator
MODEL T700
Gas Dilution
Calibrator
MODEL 701
Zero Gas
Generator
Figure 5-2: Pneumatic Connections–With Zero/Span Valve Option (50A)